The Cardiovascular System and Blood Flashcards
What is the Cardiovascular System?
art,
2) the vessels, and 3) the blood.
What do the arteries do ?
, nutrients from the digestive system,
hormones from the endocrine system, oxygen
from the lungs, and other needed substances
(drugs, etc.) are delivered to the cells.
What do the cells do ?
use each element for its unique purpose and
then excretes waste products back into the
blood
What does the heart do?
pumps the blood through the
veins back to the lungs and kidneys where
carbon dioxide and waste products are excreted
from the body, respectively
What kind of nervous system does the heart have?
It has its own nervous system that
continuously, without voluntary control,
initiates and propagates an electrical impulse
through the heart’s electrical conduction
system
What is the hearts electrical conduction system?
SA node, AV node, bundle of His, and
Purkinji fibers
What is the SA node ?
Normal pacemaker of the heart.
How does the electrical stimulation make the heart work?
First atrial chambers contract forcing blood from the atrial to the ventricles, from the ventricles contracting forcing blood out of the aorta to the body or the lungs. The lungs then pull in oxygen from the environment and load the blood to create oxygenated blood, which the heart then pumps oxygenated blood through the body.
what are the valves that keep the blood from backing up in the previous chambers& vessels
mitral
valve, tricuspid valve, pulmonary valve, aortic valve
How is the blood brought back to the heart?
Oxygen is brought to the
heart via coronary arteries while carbon dioxide waste is
pumped out of the heart tissue via coronary veins
what is the foundation of a heart attack(myocardial infraction)?
If the coronary arteries are clogged the tissue it supplies dies
What does damage to the heart muscle cause ?
arrhythmias, or
disorders of the electrical conduction through the heart
what does the hepatic artery and vein do?
bring blood to and from the liver
what doe arteries do ?
bring blood away from the heart
what doe the veins do ?
s bring
blood to the heart from the body